Though Zayn wasn't mentioned, the boys hinted at his departure throughout the concert, mostly to thank the fans for sticking by them. Styles said to the audience:

"Thank you for choosing to spend your evening with us. You have no idea how much we love you right now … I won't lie to you. Tonight was a big deal for us, and what you've done tonight has meant so much to us. We love you … You've always been there for us and we will always be there for you."

And as for Zayn's signature high notes, the boys totally had it covered! Each of the remaining band members took turns covering Zayn's parts in their songs!